Organic Eryngii Grain spawn
- 🍄 MYCELIUM ON ERYNGII SPORES: Pleurotus eryngii, also known as king oyster mushroom.
- 🍽️ GOURMET MUSHROOM: Firm, dense, and not very watery flesh, with excellent shelf life.
- 🪵 RECOMMENDED SUBSTRATE: Best used with pasteurized or sterilized enriched sawdust.
- 🌡️ COOL GROWING CONDITIONS: Prefers cool temperatures, around 15–18°C, with well-controlled humidity.
- 🌍 LOCALLY GROWN AND ORGANIC: Certified BE-BIO-01 by Certisys.
To grow your king oyster mushrooms:
King oyster mushrooms – Pleurotus eryngii
The eryngii mushroom, also known as the king oyster mushroom, royal oyster mushroom, or false porcini, is highly prized for its firm, dense, and low-water-content flesh.
Its thick stem resembles the texture of Bordeaux porcini mushrooms, with a mild, slightly nutty flavor. It is a gourmet variety, excellent when sautéed, grilled, roasted, or even served raw as a carpaccio.
Slightly more difficult to grow than oyster mushrooms, eryngii mushrooms require more stable conditions, particularly careful management of humidity, ventilation, and temperature during fruiting.
It is typically grown on a substrate made from enriched sawdust. Growing it on straw is possible, but yields are often lower unless the substrate is enriched and properly prepared.
🔬 This is mycelium on grains, intended for making your own growing media.
Oyster mushrooms are more demanding than standard oyster mushrooms. For best results, use a clean, nutrient-rich, and well-prepared growing medium.
❄️ Storing the mycelium: Store in the refrigerator, ideally between 1 and 4°C.
For best results, use it within one month of receipt.
👉 See also: How to use our mycelium
Our Commitment to Quality
We produce our mycelium under laboratory conditions to ensure varietal purity and optimal quality.
Our mycelia are organically produced and certified BE-BIO-01 by Certisys under the Belgian Organic Agriculture program.
🌱 Growing conditions
Eryngii mushrooms prefer cool temperatures, around 15 to 18°C. They require high, consistent humidity at the start of fruiting, followed by slightly lower humidity as harvest time approaches.
Unlike traditional oyster mushrooms, eryngii generally require more precise growing conditions. Proper ventilation helps prevent deformation and results in better-shaped mushrooms.
Tip from La Mycosphère: To grow beautiful, thick stems, maintain a cool, humid environment at the start of fruiting, then avoid exposing the mushrooms to excessive direct moisture during growth.
🛠️ Recommended growing media
Eryngii mushrooms are typically grown on a substrate made from enriched sawdust that has been pasteurized or sterilized.
An alternative is to use enriched, pasteurized straw, but results are often more consistent with enriched sawdust.
For simple, consistent results, we recommend our ready-to-use growing medium, which is particularly well-suited for wood-decaying varieties.
📊 Growing conditions
Inoculation: 5 to 10% grain mycelium relative to the weight of the moist substrate.
| Phase | Temperature | Humidity | Duration | CO₂ | Fresh air | Light |
|---|---|---|---|---|---|---|
| Incubation | 24°C | 90–95% | 15–30 days | 5,000–20,000 ppm | 0–1 volume per hour | - |
| Formation of primordial cells | 10–15°C | 95–100% | 4–5 days | 500–1,000 ppm | 4 to 8 cubic feet per hour | 500–1,000 lux |
| fruiting | 10–20°C, ideally around 15°C | 80–90% | 4–8 days | 500–2,000 ppm | 4 to 8 cubic feet per hour | 500–1,000 lux |
📚 Estimated data from *Growing Gourmet and Medicinal Mushrooms* by Paul Stamets. Results may vary depending on the strain, substrate, humidity, ventilation, and growing conditions.
📈 Productivity
On average, use 150 to 180 grams of fresh mushrooms per kilogram of moist substrate, depending on the substrate and growing conditions.
FAQ – King Oyster Mushrooms
Is the eryngii mushroom easy to grow?
It is a bit more delicate than gray or yellow oyster mushrooms. It requires more stable conditions, particularly in terms of humidity, ventilation, and temperature.
What type of growing medium should I use?
Enriched, pasteurized, or sterilized wood shavings are generally the most reliable choice. Straw can work, but yields are often lower.
What temperature should you aim for?
The eryngii mushroom prefers cool temperatures. For fruiting, aim for around 15°C, with a range of 10 to 20°C.
Why do enoki mushrooms keep well?
Its flesh is dense, firm, and contains less water than that of many other mushrooms. This gives it better shelf life after harvest.
What inoculation rate should be used?
We generally recommend using 5 to 10% grain mycelium relative to the weight of the moist substrate.
